A guide to interior window cleaning

Having your windows cleaned should be part of your business maintenance program

When you are enjoying your coffee in the window seat at your favourite cafe, it’s nice to have clean, streak-free glass to look through and bask in the natural light.

In commercial window cleaning, emphasis is often put on the exterior glass. Leaving the indoor surface area subject to dirt, fingerprints, and oils that become noticeable from the outer glass.

Preserve the life of your windows and glass doors

As well as leaving your storefront looking clean and fresh, regular interior window cleaning prolongs the life of glass, sills and seals. Dirt build-up and hard water embed into the glass that causes scratches and that hazy appearance. It also deteriorates paint and rubber seals over time.

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Clean windows improve energy efficiency

Dirty, damaged window seals can cause leaks, making your heating and cooling systems work overtime. Fogging and condensation can lead to mould build up. Clogged window and door tracks can keep them from opening properly too.

All excellent reasons to have regular interior window cleaning done.

How often should you clean your windows?

Commercial premises with presentation windows will probably want weekly or fortnightly indoor window cleaning along with the exterior to keep the premises looking presentable and inviting from both sides.

Homeowners can probably stretch their window cleans out to every few months. If you are near a busy road or the ocean, they will likely need to be cleaned more regularly.

DIY indoor window cleaning tools

With a few inexpensive tools and some effort, you can have your windows gleaming easily. You will need:

A square bucket

A high quality squeegee

Dishwashing liquid, or

Specialised window cleaning products

Scratchless scraper tool

A Ladder

Old towels and bed sheets

A microfibre cloth

Windex or similar

Paper towel

Interior window cleaning techniques for best results

Place an old sheet or towels on the ground below the window, and cover up nearby furniture.

Fill the bucket with water to about halfway. Use cold water - hot water dries on the glass too quickly.

Add a few small squirts of detergent. You can apply it directly to the squeegee or washer if you prefer.

Spread the soapy water over the window and work it in with the squeegee sponge. Don’t forget the window and door tracks.

Keep the squeegee pressure firm and even. Work the squeegee left to right, and right to left. Go right to the edges of the glass.

This is the best time to use the scraper to remove heavy dirt build up like bird droppings and other caked on matter. Scrape in a forwards direction to prevent scratches.

To remove the water, start at the top left corner and snake your way down the window left to right, right to the left. Make sure to go directly to the edges.

There may be some watermarks in the middle, but that’s okay. Use the microfibre cloth to wipe them away.

Follow the same process for the external window cleaning.

For extra glean, you can use the window cleaner spray and wipe it off with a paper towel.

Professional window cleaning services will provide expert interior window cleaning in addition to the outside by:

Removing cobwebs and dirt build up

Cleaning and polishing the window and glass door frames, tracks and sills

Professional window cleaners use a water-fed extension pole device which is more accessible for cleaning high windows without a ladder. They also use de-ionised water which produces streak-free results.

Window cleaning can be quite labour intensive so consider getting a professional window cleaner to do it. Remember to check their testimonials and ensure they have liability insurance.

If you’re looking out your windows now and realising they need a clean, remember to combine your internal window cleaning with the external window clean when making a booking or DIY.